Misleading advertising on sale

I was recently browsing the internet and a pop up ad should be Crocs sale glitter clog for R399 then redirected to the website to find neither sizes 3-8 available under men's and women's then when I directed my complaint to Crocs support they then uploaded the sizes and changed price to R899 but I have date and time of my screenshot for R399 on sale. BUT NOT 1 SIZE AVAILABLEFROM 3-8. I'm disappointed that they misleading the customers just to browse their website and then just have no stock available on sale for you to buy.